Task · part of 2. Energy forms and conversions: explain three, then build one
2(a). Explain how THREE devices use energy, and their conversions
Required
Chosen from toaster, greenhouse, lightbulb, bow drill, cell phone, nuclear reactor, sauna and electric vehicles. The eight are listed inside the requirement rather than lettered out, so all three choices are yours to make freely.
Notes and warnings
Note. Eight devices are offered and you need three: toaster, greenhouse, lightbulb, bow drill, cell phone, nuclear reactor, sauna, electric vehicles. They are listed inside the requirement rather than lettered out, so unlike requirement 7 there is nothing here to answer in advance. The bow drill is the one worth a second look, because its conversion chain is entirely mechanical and it is the only one on the list you can build.
Where this step comes from
- Energy Merit Badge Requirements (Merit Badge Hub, last modified 2025-12-15), Requirement 2(a) · Three of the eight devices listed inside the requirement.